Because you like Knuckles the Echidna in Sonic the Hedgehog

Years of brutal winters, foreign invasions, and crippling loneliness have left Russia's mental state far from wholly intact. See them in Axis Powers Hetalia.

Shuri is a genius-level inventor with a wicked sense of humor. See them in Marvel Cinematic Universe.

Insightful about everyone else's neuroses, Rose Lalonde is not as aware of her own. See them in Homestuck.

Dr. Gordon Freeman is a brilliant physicist is a quiet hero. And given all the violent aliens, he better be. See them in Half-Life.

Christine Daae has been secretely taking lessons from a phantom musician. It sounded less creepy in her head. See them in The Phantom of the Opera.

Javert is an inspector with a single-minded focus: to bring criminals to justice. See them in Les Miserables.

Angela Martin is uptight and puritanical, outside of the affair she's having with a co-worker. See them in The Office.

Ahsoka Tano hopes to be a very powerful and knowledgeable Jedi one day. See them in The Clone Wars.

Hank McCoy is a quintessential nerdy scientist but with a few rather unconventional physical attributes. See them in X-Men Series.

Chuck Bartowski is a sweet, laid-back electronics store/top secret government employee. See them in Chuck.